Unlimited Firepower, I'll Even Slay Gods for You to See!

Intro: Synopsis: [Invincible] [System] [Apocalypse] [Power Fantasy] [Single Female Lead?] "The gods you worship as invincible are merely my experience packs!" Invincibility begins from the very first night of the apocalypse game, where one man battles eight million! Also known as "Ten Seconds, One Fireball at the Start, Yet I Slew a Million Enemies in One Night" or "The Apocalypse Game is Extremely Difficult, But My Cheats Keep Increasing" or "Too Many Fangirls, But I Only Want to Destroy the Apocalypse." ... The entire world has been transformed into a real-life game by an unknown entity. Chen Luo, however, is not worried at all, because his system has arrived. So, what comes next: saving the world, or saving the young ladies? ... Unlimited cooldown at the start, with new talents continuously strengthening him, leading to true unlimited firepower. There's no need to worry about limiting the protagonist; skill limitations are meant to be broken. After all, the protagonist can face a million enemies alone on the first night.